I work in an automated Amazon facility - robots carry the bins around to human associates who do the Moravec's Paradox - ridden work requiring fine motor skills and quick visual acuity (those bins can be very messy) or the simple labor that wouldn't be cost effective for a machine that probably costs more than my car (such as pushing juice carts around the facility.)

The problem is, humans are up to the task - if you push them hard enough. A robot isn't going to be more cost effective than that for a long time to come. Given Amazon's culture, I'm not certain they would replace their human workforce en masse even if they could, as long as meat remains fundamentally cheaper.